[Bug 92858] AMD Radeon GPU Acceleration Disabled Under Kernels 4.2.x and later versions

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92858

--- Comment #5 from Darren <ysxikrhn at vomoto.com> ---
Thanks you again for the guide--it was simple and human-readable and I
understood the directions, I think. Sadly, as of thus far, every kernel I've
compiled panics at bootup, with a message like this, or similar: "kernel panic.
vfs unable to mount root on unknown block (0,0)". I'd take a screencapture but
there's no way to do so until X is up, and this is before X is started. I've
used a config file I built myself via make menuconfig, the default ubuntu 4.3
kernel config file, and the distro's current running kernel (4.1.12) config,
obtaining by "zcat /proc/config.gz > .config. The same message occurred under
all three of the kernels I built.

I'll keep on compiling in the meantime until I isolate the problem, but I did
have one question: Let's assume the first kernel I compile boots and
acceleration works. After I get the kernel to compile and boot, do I need to
run "make clean" in the source tree directory after "git bisect good," or is
that going to strip away files that git bisect needs in order to keep a record
of good and bad commits?

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